Update libraries/joomla/installer/installer.php

Change Proposal for  [#30038] SQL files not processed by component update.
http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=30038

From the PHP manual:
By default, version_compare() returns -1 if the first version is lower than the second, 0 if they are equal, and 1 if the second is lower.

So in my opinion the update should run once version_compare returns a value less or equal to 0 and not greater 0.